An athlete has a mass of 70 kg and is running at a speed of 10 m/s. What is their kinetic energy?
100%
3500 J
0%
7000 J
0%
350 J
0%
700 J
Q.3.
What is the mass of a ball which has 2.5 J of energy and is traveling at 5 m/s?
0%
0.1 kg
0%
0.2 kg
0%
12.5 kg
0%
62.5 kg
Q.4.
Which formula correctly shows the relationship between speed and acceleration?
0%
a = (v - u)/t
0%
a = (u - v)/t
0%
a = (v - t)/u
0%
a = v x u x t
Q.5.
What is the acceleration of a car as it increases in speed from 3 m/s to 10 m/s in a period of 5 seconds?
0%
1.7 m/s2
0%
1.4 m/s2
0%
2 m/s2
0%
0.6 m/s2
Q.6.
What is the mass of a person who accelerates from 0 m/s to 10 m/s in 30 seconds? When traveling at 10 m/s, the person has a kinetic energy of 5000 J.
0%
50 kg
0%
68 kg
0%
86 kg
0%
100 kg
Q.7.
Which of the following can be converted into kinetic energy?
0%
Gravitational potential energy
0%
Elastic energy
0%
Chemical energy
0%
All of the above
Q.8.
A ball is dropped from a height of 10 m and is pulled towards the Earth due to the gravitational field of the Earth. The strength of the Earth's gravitational field is 10 N/kg. What is the mass of the ball, if the ball has 100 J of GPE?
0%
0.5 kg
0%
1 kg
0%
1.5 kg
0%
1.8 kg
Q.9.
What is the weight of the ball in the question above?
0%
1 N
0%
9.81 N
0%
10 N
0%
15 N
Q.10.
What is the speed of a bird of mass 3 kg which has kinetic energy of 400 J?
0%
10 m/s
0%
16 m/s
0%
17 m/s
0%
20 m/s
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.